参数资料
型号: TMS470R1A384PGEQ
厂商: Texas Instruments
文件页数: 31/62页
文件大小: 0K
描述: IC RISC FLASH MCU 144-LQFP
标准包装: 60
系列: TMS470
核心处理器: ARM7
芯体尺寸: 16/32-位
速度: 48MHz
连通性: CAN,C2Slb,I²C,SCI,SPI
外围设备: DMA,PWM,WDT
输入/输出数: 94
程序存储器容量: 384KB(384K x 8)
程序存储器类型: 闪存
RAM 容量: 32K x 8
电压 - 电源 (Vcc/Vdd): 1.71 V ~ 2.05 V
数据转换器: A/D 12x10b
振荡器型: 外部
工作温度: -40°C ~ 125°C
封装/外壳: 144-LQFP
包装: 管件
配用: 296-23003-ND - KIT DEV KICKSTART TMS470
Switching Characteristics Over Recommended Operating Conditions for External Clocks
(1) (2) (3)
CLKOUT
tw(COH)
tw(COL)
ECLK
tw(EOH)
tw(EOL)
www.ti.com ......................................................................................................................................................... SPNS110E – AUGUST 2005 – REVISED MAY 2008
PARAMETER
TEST CONDITIONS
MIN
MAX
UNIT
SYSCLK or MCLK(4)
0.5tc(SYS) - tf
ns
tw(COL)
Pulse duration, CLKOUT low
ICLK: X is even or 1(5)
0.5tc(ICLK) - tf
ICLK: X is odd and not 1(5)
0.5tc(ICLK) + 0.5tc(SYS) - tf
SYSCLK or MCLK(4)
0.5tc(SYS) - tr
ns
tw(COH)
Pulse duration, CLKOUT high
ICLK: X is even or 1(5)
0.5tc(ICLK) - tr
ICLK: X is odd and not 1(5)
0.5tc(ICLK) - 0.5tc(SYS) - tr
N is even and X is even or odd
0.5tc(ECLK) - tf
ns
tw(EOL)
Pulse duration, ECLK low
N is odd and X is even
0.5tc(ECLK) - tf
N is odd and X is odd and not 1
0.5tc(ECLK) + 0.5tc(SYS) - tf
N is even and X is even or odd
0.5tc(ECLK) - tr
ns
tw(EOH)
Pulse duration, ECLK high
N is odd and X is even
0.5tc(ECLK) - tr
N is odd and X is odd and not 1
0.5tc(ECLK) - 0.5tc(SYS) - tr
(1)
X = {1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16}. X is the interface clock divider ratio determined by the PCR0[4:1] bits in the SYS module.
(2)
N = {1 to 256}. N is the ECP prescale value defined by the ECPCTRL[7:0] register bits in the ECP module.
(3)
CLKOUT/ECLK pulse durations (low/high) are a function of the OSCIN pulse durations when PLLDIS is active.
(4)
Clock source bits are selected as either SYSCLK (CLKCNTL[6:5] = 11 binary) or MCLK (CLKCNTL[6:5] = 10 binary).
(5)
Clock source bits are selected as ICLK (CLKCNTL[6:5] = 01 binary).
Figure 7. CLKOUT Timing Diagram
Figure 8. ECLK Timing Diagram
Copyright 2005–2008, Texas Instruments Incorporated
37
Product Folder Link(s): TMS470R1A384
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